C# Discussion Boards - CodeProject

How can i use infinite parameters in a method

da vinci coder12-Nov-05 0:15

12-Nov-05 0:15

ok my problem is like this..

i want to make a method for clearing textbox`s in a form and the method looks like this..

public void clearTextBox(TextBox a, TextBox b)
{
a.Text="";
b.Text="";
}

of course it will clear only two textbox`s which i decleared..
but i want my method to clear n textbox so i can use this method several times..

how should the code look like ?

i remember from c++ it should be something like this but its not working at c#:

public void clearTextBox(TextBox a,...,Textbox b);

any help would be great..

thanx guys..
good coding..

Re: How can i use infinite parameters in a method

Daniel Turini12-Nov-05 0:59

Daniel Turini

12-Nov-05 0:59

void ClearText(params Textbox[] text)
{
	foreach (Textbox t in text)
	t.Text = "";
}

Then, you can call it with any number of arguments:
ClearText(TextBox1, TextBox2, TextBox3);

I don't see dead pixels anymore...
Yes, even I am blogging now!

-- modified at 6:59 Saturday 12th November, 2005

How to make a sound in a form?

Sina_A11-Nov-05 22:35

Sina_A

11-Nov-05 22:35

Hi my friend.
I want to make beep or warning alert in my form , but , I can't do it.
I just can make it with windows media player.
Thank you for your help.

Re: How to make a sound in a form?

g00fyman11-Nov-05 23:19

g00fyman

11-Nov-05 23:19

u need to use the windows api MessageBeep

try this[^]

hope that help

g00fy

Re: How to make a sound in a form?

MoustafaS11-Nov-05 23:47

MoustafaS

11-Nov-05 23:47

The SoundControl available in .NET 2.0 .

------------------------------
"The Soapbox has been so ..."

Changing Enviroment strings at install time

Reanalyse11-Nov-05 20:42

Reanalyse

11-Nov-05 20:42

Is it possible to change (or rather set) an environmental variable at install time with the installer from VS2003 or VS2005.
I am using the Oracle Instant client and need to add the "nls_lang=America.American......" environment string.
Likewise can registry settings be set.
Thanks

Re: Changing Enviroment strings at install time

Reanalyse13-Nov-05 15:29

Reanalyse

13-Nov-05 15:29

Think I have done it - a test will tell

Right Click on the Deployment Project
Select View
Select Registry
On [HKEY_LOCAL_MACHINE] add key "SYSTEM"
On [System] add key "CurrentControlSet"
On [CurrentControlSet] add key "Control"
On [Control] add key "Session Manager"
On [Session Manager] add key "Environment"
On [Environment] add keystring Variable Name and in it's properties add the value

Hope this helps someone else

how to download a file from a remote server using FTP through ASP.NET/C#

v.k.s11-Nov-05 19:40

v.k.s

11-Nov-05 19:40

how to download a file from a remote server using FTP through ASP.NET/C#

-- modified at 1:42 Saturday 12th November, 2005

Should I use window controls with directx in full screen mode ?

dinh van hai11-Nov-05 17:24

dinh van hai

11-Nov-05 17:24

hi everyone,

I'm new to Directx . If you don't mind I'd like to ask a question .

Should I use window controls in full screen mode or I have to create a new ones.

Thank you for answering my question .
Sincerely,

Re: Should I use window controls with directx in full screen mode ?

User 665812-Nov-05 1:35

User 6658

12-Nov-05 1:35

You can use windows controls in DX fullscreen mode. There's a call SetDialogBoxMode which will enable controls in fullscreen mode, it has several limitations, however.
You better use your own custom drawn directx controls or use the ones from the DX samples in the SDK.

For directx associated questions I recommend you to use the Gamedev.net directx forums. You can find them here

regards

modified 12-Sep-18 21:01pm.

Parameter passing to OleDb command

jem918111-Nov-05 14:55

jem9181

11-Nov-05 14:55

I have two tables in my db. One is an invoice table and the other is a sales table. The sale table has all of the items on the invoices (referenced by invoice number). I want to grab specific invoices at a time (say 3 or more ) The best way I though to do this would be to use an IN statement in the where clause of the SQL stmt. Since I don't know how many I am going to need to grab, I was wondering if it was possible to pass one parameter to the IN clause ( a set of invoice numbers). Or would it be easier to just grab one at a time and append the result to my dataset?

For instance:

SELECT INVOICES.*, SALES.* FROM INVOICES INNER JOIN SALES ON INVOICE.invoice_number = SALES.invoice_number WHERE (Invoices.invoice_number IN (?));

Where ? could be {1002, 1004, 1100,...)

Re: Parameter passing to OleDb command

n10sive11-Nov-05 16:57

n10sive

11-Nov-05 16:57

instead of messing with parameters, why don't you just build the string in code and put it in the select command text before you execute it?

remove nested collection in designmode

reefboy11-Nov-05 13:14

reefboy

11-Nov-05 13:14

Hi
I'm Antonio and write from Italy.
I hope you help me.
(sorry for my bad English!)

I created a Menu custom control with a nested components collection.

It works fine, if I used the Collectionform-Designer to add and remove
the components.

But if remove the custom control or the "Granchild" item from the form designer window the
generated code the "Granchild" items wil be removed but "Child" items still remaining in the Form class and I have to remove manually the declaration and the code in
Initializecomponents.

Example:

-----------------------------------------------------------------------------------
| MainItem | MENU CUSTOM CONTROL
| Item1 |-----------------------------------------------------------------------
| Item2 > | Item3 | still remaining
| removed | | Item4 | still remaining
| |
------------

The components is a Component derived class, the collection is a
Collectionbase derived class.

thanks for your time.

Sincerely,

Antonio Lettieri

MDI Disable _ [] X when maximized

Dwayner7911-Nov-05 11:36

Dwayner79

11-Nov-05 11:36

OK, so this is a hack. We are creating a MDI program, but the first few releases will not support the MDI feature. I want to open one MDI maximized, and disable the _, [], and X from showing in the upper right. I can disable the functionality of the buttons on the mdi form itself, but the parent will not give up these buttons. The Close and minimize do not work, but the restore, [], still works. Anyone know how to 1. disable this, 2. remove the buttons themselves.

Thanks so much,

*****************
"We need to apply 21st-century information technology to the health care field. We need to have our medical records put on the I.T." —GW

WinForms - drawing outside the main Form bounds?

Defcon11-Nov-05 11:36

Defcon

11-Nov-05 11:36

I'm writing an app that has a UI like The Gimp's or early versions of VB - i.e. there's one toolbar at the top. clicking on various buttons int he toolbar drops down controls or opens up windows.

e.g. think of the volume icon in the system tray, when clicked the volume slider pops up. My app toolbar would work the same way. When a control in the toolbar is clicked, it would drop down to show its full form.

something like this -

<code>

------------------------------------------------------------------------------------
| --------------------------------------------------------- --- --- ---------- |
| | | | <tab control with tabs> | | | | | | |controls| |
| --------------------------------------------------------- --- --- ---------- |
------------------------------------------------------------------------------------

------------------------------------------------------------------------------------
| --------------------------------------------------------- --- --- ---------- |
| | | | <tab control with tabs> | | | | | | |controls| |
| | |--------------------------------------------- --- --- ---------- |
--| |_____________________________________---------------------------------
| |
| |
| < dropped down tab > |
| |
| |
| |
--------------------------------------------------

</code>

My problem is - if the main Form is the toolbar (quite possibly the ToolStrip control, containing all the child controls), then all child controls are restricted to the form's display area and hence cannot extend beyond it.

Whats the best solution for this. I can think of displaying a modeless Form whenever a toolbar item is clicked, and position it appropriately. But I won't be able to use a standard TabControl then.

Any ideas?

-- modified at 17:37 Friday 11th November, 2005

Re: WinForms - drawing outside the main Form bounds?

Dwayner7911-Nov-05 11:46

Dwayner79

11-Nov-05 11:46

DISCLAIMER: I have no ties to this group except that I purchased their component to do this. It is a GREAT! component.

DotNetBar suite will let you do this and many other UI things.
http://devcomponents.com/dotnetbar/

*****************
"We need to apply 21st-century information technology to the health care field. We need to have our medical records put on the I.T." —GW

Re: WinForms - drawing outside the main Form bounds?

Defcon11-Nov-05 12:00

Defcon

11-Nov-05 12:00

Can you be a little more specific?

I can get the trial version and see if its possible, but my doubt was of a more general nature - i.e. is it possible in WinForms to extend a control beyond its parent boundaries?

I'm playing with the Infragistics NetAdvantage suite as well, but haven't found a way to solve that basic issue.

Thanks

Weird form update problem...

Drew Stainton11-Nov-05 11:15

Drew Stainton

11-Nov-05 11:15

I've got a main form with a status bar that contains a progress control. I've implemented a search dialog as well as a find next command.

When the search command is selected, A form is presented for the search criteria. After OK is clicked, I close the search form and proceed to call a method that implements the search and periodically updates the value of the progress control. For some reason, after about three seconds, the maximize button on the main form title bar becomes disabled and the progress control stops updating - there's no error or anything, it just stops redrawing. When the search is complete, the progress bar updates itself and displays properly (at 100%) and the maximize button returns to its enabled state.

When the find next command is selected, the progress bar is updated properly and DOES NOT exhibit the problem above - the progress bar makes its way all the way up to 100% without a problem (and the maximize button issue doesn't happen).

The only difference between the two methods is that the first one brings up a form for data entry and closes it. After that, the two methods are identical - they both call another method that does the searching.

My first guess was that this has to do with garbage collection because of the data entry form, which would explain the delay of three seconds or so. But why this would affect the main form like it does is beyond me.

Has anyone run into something like this? It's driving me nuts.

Thanks,

Cheers,
Drew.

Re: Weird form update problem...

leppie11-Nov-05 19:08

leppie

11-Nov-05 19:08

You probably need to run the search in a seperate thread.

^{xacc.ide-0.1-rc3 released! Download and screenshots}

Re: Weird form update problem...

Drew Stainton11-Nov-05 19:15

Drew Stainton

11-Nov-05 19:15

I didn't think that would matter, but I'll give it a try.

Thanks leppie!

Cheers,
Drew.

Need some help with regex

FreeClimber11-Nov-05 9:53

FreeClimber

11-Nov-05 9:53

Hi,

I need to test a string with regex, but i don't know how i need to build up the pattern. A valid string can contain every letter a-z and somewhere in the middle a '-'. Please help me with solving this problem.

Thanks

Frank

Re: Need some help with regex

leppie11-Nov-05 10:51

leppie

11-Nov-05 10:51

You specify 'can' and not 'must' so I believe that is correct. You dont specify whether there can be multiple '-' 's. I assume you can, and they can follow one another.

@"[a-z]([a-z\-]*[a-z])*"

If you must have only 1, which contradicts 'can':

@"[a-z]+\-[a-z]+"

^{xacc.ide-0.1-rc2 released! Download and screenshots}

-- modified at 16:52 Friday 11th November, 2005

Re: Need some help with regex

FreeClimber11-Nov-05 11:25

FreeClimber

11-Nov-05 11:25

sorry i forgot Frown | :(

first ther must be at least one letter and after this it can be a '-' and ther must be at least one letter after it.

Thanks for help so far...

Creating a new table of smaller dataset.

zaboboa11-Nov-05 9:29

zaboboa

11-Nov-05 9:29

Hello,

I have a dataset that has a single table, with 20 columns let's say.
What I want is to create a new table with the first 10 columns of the bigger table. The reason why, is I want to use XmlWrite method on my dataset, but only to dispaly 10 columns. Any ideas?

Thank you.

Re: Creating a new table of smaller dataset.

rudy.net11-Nov-05 11:04

rudy.net

11-Nov-05 11:04

I will share a class that I use in these cases. Note that this class is used as part of a select query that I normally use in my code, so you may modify as needed.

<br />
	public class SelectCommand<br />
	{<br />
		StringCollection columnNames = new StringCollection();<br />
		public SelectCommand(string selectQuery)<br />
		{<br />
			string[] tmp = selectQuery.Split(new char[]{','});<br />
			for (int i = 0; i < tmp.Length; i++)<br />
				columnNames.Add(tmp[i].Trim());<br />
		}<br />
<br />
		public DataTable ExecuteSelect(DataTable sourceTable)<br />
		{<br />
			DataTable dt = new DataTable(sourceTable.TableName);<br />
<br />
			DataColumn newCol;<br />
			foreach (DataColumn col in sourceTable.Columns)<br />
			{<br />
				if (columnNames.Contains(col.ColumnName))<br />
				{<br />
					newCol = new DataColumn(col.ColumnName, col.DataType, col.Expression);<br />
					dt.Columns.Add(newCol);<br />
				}			<br />
			}<br />
<br />
			DataRow newRow;<br />
			foreach (DataRow row in sourceTable.Rows)<br />
			{<br />
				newRow = dt.NewRow();<br />
				foreach (string colName in columnNames)<br />
				{<br />
					newRow[colName] = row[colName];<br />
				}<br />
				dt.Rows.Add(newRow);<br />
			}<br />
<br />
			return dt;<br />
		}<br />
	}<br />

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